Hey so... this comes from a person who hasn't played yet, but I think my opinion may interest you anyway for reasons that will be obvious.
I have noticed the game recently, and it caught my eye since I'm on the lookout for non-bara anthro games.
The plot and overall art are to my taste, for most part, but I'm going to be honest - I was a bit put off by how the main character looks. I don't mind the species at all - all the opposite, actually. Samoyeds looks a bit like huskies or wolves, and we have an overabundance of these, so a lab is perfectly fine on paper.
What I don't like is how he looks on that CG you use as a banner, which is the only instance of me seeing him, since I didn't play yet. He looks too... well... "round" and "smooth", for a lack of better words - a round and almost cartoony face that doesn't fit with the rest of the characters and no defined fur whatsoever. I hope it doesn't sound too harsh - I allow myself to criticize like that because I see how the other characters look more detailed and "refined". Just look at the other canines, and how their muzzle shapes are totally different, not to mention the cheeks and stuff...
But on your comparison reference pic - aka Design A - he looks stunning. He's gorgeous there, really. And I like him way more on said pic than on Design B. That's because he doesn't have such a round head, and you see fur defining. If you were to use that look for him, he'd be perfect.
Though I think it's worth mentionning I think having hair would look good on him. It's a bit strange that he doesn't have hair considering even the rabbit/hare character has, and both other canines have too. It would also make his head less round and smooth, obviously. But that's more of a personal opinion.
Either way, I'm going to play the demo soon!